Digital currencies are the way of the future and will prove a boon for the global financial system, but at present they are primarily being used to process illicit funds, and systems need to be developed to bring out their true advantages, according to Larry Fink, chairman and chief executive of BlackRock, the world-rsquo;s largest money manager.In an exclusive interview with the South China Morning Post, Fink said that global cooperation was the way forward for the development of digital...